2. Set sharing options for Google Groups for Business
If you turned on Groups for Business, set sharing option to specify who can access your Groups service and what they can do with the service. You can specify who can access the service, whether users can create their own groups or add members who are outside your organization, and more.

3. Customize the web address for your Groups service
If you turned the Groups for Business service on, you can make it easier for your users to find the Groups directory by changing the web address to something easy to remember. For example, users can access the Groups directory at groups.your-domain.com instead of at the longer default address groups.google.com/a/your-domain.com.

4. Migrate mailing lists from LDAP server
If you have mailing lists on an LDAP server, you can migrate them to Google Groups using the Google Cloud Directory Sync utility. Use this tool to create new groups for any mailing lists on your LDAP server that you want to use with your organization's G Suite account. Directory Sync synchronizes only groups and their memberships, not the contents or settings of the groups.

5. Create new groups
Use the Admin console to quickly create new groups for your organization and allow your users to communicate and collaborate with groups of people they frequently contact. If you've turned on Groups for Business you can create groups that can serve as collaborative inboxes for specific groups of users, such as technical support or customer service.